The accident follows a crash between a car and a bin lorry which claimed the life of an 83-year-old man in May. In June, a woman was airlifted to hospital following a two-car crash at the junction.

The A470 SOS Dolgellau petition was started on Facebook late on Sunday night and within hours had 1,200 followers.

Many agreed with comments made by local councillors that more accidents could happen unless something is done.

Most are concerned that new road markings have caused confusion and want to see the introduction of safety measures including a roundabout.

A motorcyclist was killed after an accident on the A470 at the Bala Junction near Dolgellau. It is the second fatality and third collision on this stretch of road in six weeks. (Image: Erfyl Lloyd Davies)

Charles Slaney wrote on the Facebook page: “There must be some underlying reason why we do not have roundabouts on this road. There should be one at South Dolgellau junction, the Bala junction, the Dolgellau junction and the Tywyn junction. Instead we only have one at Llanelltyd.

“We can't allow this to continue. At this rate this road will have killed 60 people in the next 10 years for the sake of no roundabouts.

Janet Mai added: “The road is more dangerous since the changes. I drive that way everyday and have had two near misses since the alterations, people pulling out.”

Hotelier and keen biker Nigel Bulmer said: “I have been communicating with Cllr Dyfrig Siencyn since April expressing concerns about the new road markings on the A470 .

“They are dangerous and confusing. I do not believe roundabouts are a solution but agree a roundabout would be a significant improvement at the White Hut junction. Something needs to be done.”

Dolgellau town councillor John Raghoobar said the recent work on the A470 had made the situation worse.

A Welsh Government spokeswoman said: “A police investigation is underway into the accident on the A470/A494 junction. The cause of will need to be established before considering whether additional measures on this stretch of road are appropriate.”

Paying tribute to Mr Haddock, from Birmingham, his family said: “He was a loving husband, father and grandad. He always put others before himself and knew how to make people laugh. On July 5th Kevin was on a day out with his nephew Chris. He had been looking forward to this day out for weeks. He always took his time when he was on his bike. Kevin is going to be sadly missed by his family and friends.”

Police have renewed their appeal for witnesses to the collision at about 6.40pm on Saturday. Sgt Emlyn Hughes said: “We believe there were other vehicles at or near the junction and it is very possible they may have witnessed the incident.